Heat transfer device



Sept. 5, 1939. B. F. BERKI-IEIMER 2,171,642

HEAT TRANSFER DEVICE Filed May 28, vLI938 4 Sheets-Sheet l I @www wmwfww iy; N 4 H NNNN I A U m R .I I n I .2 w Hummm InMIWILIIIw mia I M 3 I A IMI ff'f' I I I I I I I I I I I I IIIIIIIIIIIIIIIII IILIII \\\HU l l l l Sept. 5, 1939.

B. F. BERKHEIMER HEAT TRANSFER DEVICE F'ild May 28, 1938 IIHHI mr@ 40 49u 4B rlf f f f f Y jf l JIJ I I 7 Q17 l ii O n x r o .ffii 56 E O 77"' 42, lil f o urz-il 40 a J 39, 34` 5K ,54- 2% WMS 38 @34 4 Sheets-Sheet 2 INVENTOR Ew]l .gj-6E im i #m1-@fom Sept. 5, 1939. B. F. BERKHEIMER HEAT TRANSFER DEVICE Filed May 28, 1958 4 Sheets-Sheet 3 lo 5 mm l; o

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HEAT TRANSFER DEVI CE Filed May 28, 1938 4 Sheets-Sheet 4 n ffy/' [2&3 1,21! 1R17 1,216

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Jig/l. /zeb/ se 1 a mee INVENTOR Amm Patented Sept. 5, 1939 UNITED STATES PATENT OFFICE Claims.

I'his invention relates to a stove and more particularly to a dual purpose stove used as a combination heater and cook stove.

An object of this invention is to provide panels functioning as walls of a sto-ve, which panels may be removed and replaced without removing any casting from the stove.

Another object of this invention is to provide an enameled panel that may be replaced without removing any of the parts from the stove.

Another object of this invention is to provide an enameled panel having a sheet metal base which interlocks with the castings on the stove in such a manner that the panel may be removed without removing any of the castings from the stove.

Another object of this invention is to provide removable Walls, which walls cooperate with the remaining stove structure to form air circulating passages.

Another object of this invention is to provide a cook stove having air passage openings near the top and bottom, permitting cold air to be drawn in near the bottom and expelled at the top.

Another object oi this invention is to provide a combined heater and cook stove that is easily produced, cheap, at the same time economical and efficient, presenting a neat appearance and requiring a small space.

Other objects and advantages reside in the construction of parts, the combination thereof and the mode of operation, as Will become more ap-` parent from the following description.

Referring to the drawings,

Fig- 1 discloses a perspective View of a stove with the side panel in readiness for insertion.

Fig. 2'discloses a side elevation with the panel inserted in up portion, prior to being moved laterally into position.

Fig. 3 discloses the side panel in position.

Fig. 4 is a fragmentary cross sectional view taken substantially on the line 4-4 of Fig. 1*.

Fig. 5 is a fragmentary cross sectional view taken substantially on the line 5 5 of Fig. 4,

Fig. 6` is a bottom view of the stove with a portion of the shipping crate assembly in position.

Fig. 7 is an end elevation with parts of the base broken away and shown in section to show the shipping cleats.

Fig. 8 is a fragmentary detail view showing a portion of the base dove-tailed toreceive a tenon projecting downwardly from the bottom of the stove.

Fig. 9 discloses a cross sectional view taken substantially on the line 9 9 of Fig. 8.

Fig. 10 is a longitudinal cross sectional view taken through the re-box and grates.

Fig, 11 is a cross sectional view taken substantially on the line I I-ll of Fig. l0.

Fig. 12 is a fragmentary detail View showing the 5 method of inserting the fire-box lining.

Fig. 13 is a perspective view of a modiiication of the stove, with parts of the walls broken away to disclose the various compartments within the stove. I

Fig. 14 is another modification similar to the modification shown in Fig. 13; but showing legs instead of a continuous base,

Fig. 15 is a perspective view of the panel,

Figs. 16 to 18 disclose fragmentary views of the 15 grate support located in the front end of the stove.

In conventional cook stoves the frame or the housing is either exposed to the atmosphere or it may be covered with insulating material, so as 20 to prevent radiation of heat. In the embodiment disclosed herein, the cook stove has been provided with an outer shell on either side, cooperating with suitable apertures in the bottom and in the top of the stove for circulation of air, so that the stove may be used both as a cook stove and as a heater. In this respect this stove is ideally adapted tosupplement the use of electric ranges or gas ranges in the kitchen or elsewhere, this stove being used to both furnish heat as a cook stove and tofurnish a heater for the room. Furthermore, the stove has been constructed and arranged so as to be easily shipped and assembled at destination. In order to facilitate shipping, the base 'of the stove has been provided with 35 downwardly projecting lugs engaging cleats in the bottom of the crate, which lugs cooperate with' the cleats in holding the stove in position Within the crate.

In the event the enameled side panels of the 40 stove should be damaged in shipping, these side panels may be replaced Without removing any of the cast iron portions of the stove. This permits replacement of damaged panels without involving a great amount of labor in replacing the defective panels. These panels are held in position by a plurality of lugs projecting downwardly from the top of the stove and rearwardly from the front of the stove, which lugs engage suitable slots in inwardly directed flanges integral with the panels. The rear side and the bottom side of thepanel may be held in position by suitable screws extending into the back of the stove and up into the base thereof.

'I'he shaker for the grates has been placed on 55 vthe back end of the stove.

The ash removal drawer is located in the front end of the stove. The grate shaker may be operated without opening any doors in the stove. This permits shaking the ashes without the escape of dust into the room. The connection between the grate and the handle is partially obstructed from view by being seated in a cup-like depression in the back of the stove.

The linings for the fire-box have been removably mounted. These, however, are locked in position, so that clinkers or unburned fuel, or any other solid matter, will not dislodge the removable linings when the grates are shaken.

Each leg of the stove is held in position by one bolt, cooperating with a tongue angularly disposed with respect to the flanges constituting the body portion of the leg and a plurality of lugs in the base of the stove, to hold the leg in a rigid position. This permits of easy assembly, a low number of parts, resulting in a very substantial supporting structure for the stove.

In the preferred modication no legs havebeen used; but thestove has been mounted upon a base extending throughout the entirelperiphery of the stove and resting upon the floor. In this modication a utility cabinet is found below the ash pit. This may be used for storing kitchen utensils or any other articles to be concealed. w

yReferring to Fig. 1, the stove 20 is mounted upon a plurality of legs 22. Each of the legs 22 consists of a pair of flanges 24 angularly disposed relative to each other, so as to form a right angle, as may best be seen by referring to Fig. 5. A supporting tongue 26, forming an angle of substantially 45 with respect to each of the iianges 24 and bisecting the angle formed by the flanges 24, extends along the bottom 28 of they stove. The tongue 2 6 is provided withV a rib 38 projecting downwardly, the bight of which straddles a transversely disposed lug 32. n extending at an angle of substantially 45 with respect to the sides of the stove, positions the tongue 26 and the legs 22. In order to further position the legs, a pair of lugs 34, one on each side of the tongue 26, parallel to each other and at right angles with respect to the lug 32, forms a channel for aligning the tongue 26. tongue is held in position by a wing screw 36 threadedly engaging the base 28 at 38. From the foregoing structure it may readily be seen that each leg 22 is laccurately positioned by the tongue 26 being seatedin the channel formed'by the lugs 34 and furthermore positioned by the transverse lug 32 seated in the bight'opposite the rib 30. A single bolt or fastening member 36 holds the leg in proper position. y

The base 28, in addition to the lugs 32 and 34, is also provided with a plurality of longitudinally extending lugs 48 and transverse lugs 42. These lugs are utilized in shipping the stoves, that is, for holding the stove in position inthe shipping crate, as may best 'be seen by referring to Figs. 6 and 7. Transverse supporting members 44 l suitably secured'to the shipping crate 46 are provided with cleats 48 snugly fitting between the longitudinally extending lugs V40 and thel transverse lugs 42, so as to hold the stove in position with respect to the crate. prevents the sides of the stove being damaged by bumping against the sides of the crate. w In the event the stove is damaged in shipping, Athe more vulnerable parts thereof may be replaced Without dismantling the entire stove. The front end 58 of the vstove is preferably mad The Y During transit this from cast iron faced with enamel. This front end piece is`provided with a plurality of rearwardly extending lugs 52 on either side thereof for engagement and support of a panel 56, which will be more fully described later. The top frame 58 is also made from cast iron. It is provided with drooping or overhanging ledges 60, one on either side, provided with a plurality of vent -holes or air passages 62. This overhanging ledge portion 68 is provided with a plurality of downwardly projecting lugs 64 for holding the panel 56 in position. The rear end 66 is also preferably made of cast iron.

The sides of the stove are covered with removable panels 56, as may best be `seen by referring to Fig. 15. Each panel 56 is provided with inwardly projecting flanges 68, 18, 16 and 11. The inwardly projecting flange 68 extends along the top of the panel when it is in position. The inwardly projecting flange 16 extends. along the front edge of the stove when the panel is mounted on one side Vand along the rear of the stove when the panel is mounted on the other side. The flange 16 extends along the rear of the stove when the panel is on the one side and along the front of the stove when the panel is on the other side. The ange 68 is provided with oblong or rectangular apertures 12, one for each of the lugs 64, so that the panel may be raised into position with the forward flange 18 or 16, as the case may be, clearing the lugs 52. Flanges 18 and 16 are provided with `a plurality of apertures or rectangular openings 14, one for each of the lugs 52.

When the panel 56 is mounted on one side of the stove, the openings 14 in the flange 10 register with thelugs 52 when the panel is in the up position as shown in Fig. 2. After the panel has been positioned as shown in Fig. 2, it is moved forward, onto the right as shown in this gure, to cause the lugs 52 to enter the apertures or rectangular openings 14 in the ange 10. When in this position the flange 16, extending inwardly from the rear edge of the panel 56, overlaps the rear end frame of the stove and is secured in position by a plurality of bolts or screws passed through the rectangular openings 14. The screws may threadedly engage the end frame 66 or nuts. may be used on the inside of the end frame, preferably the bolts thread the end frame. The flange 11 along the bottom of the panel is provided with a plurality of openings 18 which receive bol-ts threadedly engaging the bottom of the stove. From the foregoing it may readily be seen that the panel is held in position by the lugs 52 and 64 cooperating with the bolts. When the panel is placed on the other side of the stove, the flange 16 registers with the lugs 52 and the flange 18 overlaps the rear of the stove. Thus, it is seen that the same panel 56 may be used on either side of the stove without any alteration whatsoever. The panel 56 is inserted and may be removed and another replaced without removing any casting from the stove. This facilitates replacement in the event the panel is damaged in shipment or otherwise.

The flue collar 88 in the top piece 58 is located near the back of the stove. In-front of the flue collar is found a pan top 82, provided with a circular opening receiving a stove lid 84. This may be eight inches in diameter, or any other suitable dimension desired.

The fuel feed door or lid 86 is located in front of the pan top and `is .provided with a downwardly projecting lip or .extension 90, so as to cover the opening in front of the pan top and the opening in the top of the end frame 50. By providing an opening in the end frame, larger pieces of fuel may be fed intoy the stove than if the fuel feed opening were located exclusively in the top of the stove. The lid may be raised by manually lifting the handle 88, suitably attached to the fuel feed lid 86. The top of the lid 86 is provided with check draft openings 81, which also act as a hot blast when burning bituminous coal. 'Ihe check draft damper 88 is controlled by actuating the handle 88 to the right or to the left, as the case may be.

As may be best seen by referring to the transverse cross sectional view shown in Fig. 1l, side Walls |00, one on either side of the fire-box, which will be later described, cooperate with the panels 56 to provide a channel on an air passage from the bottom of the stove to the top. The bottom of the stove, as may be seen by referring to Fig. 6, is provided with several oblong apertures |02, forming air passages registering with the air passage or space between the panels 56 and the side walls |00. As already stated, the air escapes through the opening 62 in the overhanging ledge 60, so as to permit the air to circulate, absorbing heat from the side walls |00, so as to heat the air in the room surrounding the stove.

Near the upper part and on the inner side of the side walls are found a plurality of inwardly projecting ribs |04, vertically disposed in parallel relation to each other. The lower edge or end of the ribs |04 constitute abutments for the fire-box lining members |06, three along each side in the modification as best seen in Fig, 10. There is a fire-box lining ||0 along the front end of the fire-box and another fire-box lining 2 disposed in the rear end of the re-boX.

As may best be seen by referring to Fig. l2, each of the lire-box lining members |06 is provided with an aperture ||4 near the top, registering with an arcuate hook-shaped portion ||6 integral with the side walls |00. The fire-box lining is positioned by rotating the lining so as to cause the arcuate hook ||6 to register with the aperture ||4 until the stop ||8 engages the side walls |00, as clearly shown in Fig. ll. The front end fire-box lining ||0 is provided with a seat engaging the grate supporting device, which will be described more fully later. When the fire-box linings are in this home position, clinkersy or any other solid matter found on the grates will not displace or dislodge the fire-box lining members |06, for the reason Ithat the upper edges of members |06 abut the lower ends of the ribs |04, the ribs |04 forming stops for the lining members |06.

The side walls |00, provided with ribs |04 and hooks H6, are interchangeably mounted, so that the side walls |00 may be used either on the left side or on the right side. Furthermore, the lining members |06 located on the sides of the rebox are also interchangeable, for use on the right side of the fire-box or on the left side thereof.

As may best be seen by referring to Figs. 16 to 18, the forward ends of the grate members |20 are journalled in a bearing support 2| transversely disposed and spanning the distance between the side walls |00. Member |2| is preferably held in position by a plurality of lugs |22 projecting inwardly from the side walls |00. Member |2| is provided with a pair of hooks |23 extending upwardly adjacent a cut-away passage |25, so as to form seats |21. The grate member may be inserted by raising the end of the grate member through the clearance |25 over the hook I 23,

After the grate members have been placed in position, a retaining plate |28, provided with an ear 28a, an aperture |28b and a pair of grate receiving holes |280, is mounted in front of member |2| by extending the ear |28@ into an apertured lug |26 and passing the hole |281) over the end of the bolt |29 to hold the grate members in position by the ends thereof projecting through the holes |28c. The plate |28 is held in position by a wing nut |29a engaging the bolt |29. Two gear sectors |33 are slipped over the end of the grate members prior to the mounting of the plate |28 and nonrotatably mounted thereon for driving the two grate members in unison, but in opposite directions, so that when one of the grate members is rotated by the shaker arm |30 the other is rotated also.

The grate members |20 are interchangeably mounted. One end |20a of each grate member is longer than the opposite end |20b. If the grate member supporting the shaker arm is defective and is to be replaced, the replaced grate member has the end |20a projecting through the rear bearing 3|. The other grate member has the end |2019 terminating in a journal in the rear of the stove and the long shank end |20a mounted in the front end of the stove. By this arrangement the grate members are interchange- 4;

able, so that it makes no difference which grate member is to be replaced. It is merely necessary to order member |20 and it can be used either on the left hand side or the right hand side. The grate member may readily be replaced by merely unscrewing the thumb nut |29a from the bolt |29 and removing member |28 from its position, when either grate member may be removed from the front end by merely raising the particular grate member from the hook |23 and letting the forward end drop down through the passage |25, when it may be pulled forward out of the bearing in the rear of the stove. Obviously, if it is the grate member that carries the shaker arm, the screw |32 holding the shaker arm |30 is unscrewed and the shaker arm removed.

An opening in the rear end 66 is aligned with the bearing receiving the end |20b of the grate member |20 that is not actuated by the shaker arm |30. A name plate |42 is held in position by suitable screws and overlies this opening, so that the name plate has a duofunctional purpose. It serves as a name plate and as a cover plate.

In the event the stove is installed in a position such that the shaker is not readily accessible in the position shown, the name plate |42 shown in Fig. 'l may be removed, the shaker arm |30 connected to the end of the other shaker and the name plate inserted over the cup-shaped recess vacated by the shaker shown in Fig. 10, so that the shaker arm may be attached to either grate to suit the convenience of the user of the stove.

In order to provide a tortuous path for the spent gases, such as smoke and the like, escaping from the burning fuel, a baffle is placed immediately in front of the flue opening and is held in position by a suitable lug |52 held in position by a screw |54.

Below the grate members is located an ash pit compartment |56, as may best be seen by referring to Fig. 13. This is provided with an ash pan |58 removable through the door |60 in the front end of the stove. This door is preferablyl held in position by a piano typehinge |62.

The side walls |06 are provided with draft openings, angularly disposed and controlled by a f. damper |64, provided with a handle |66, projecting through the front end of the stove and terminating in a knob |68. There is one damper for each side of thefire-box, as may best be seen by referring to Fig. 13. f

In this gure the stove has been mounted upon a continuous base |69 extending around the entire periphery of the stove. The base |69 is heldin position by tenons |13 integral with and projecting downwardly from the bottom 28,

" fitting into mortises |15 in the ends of the base |69. The stove body proper is deeper than that disclosed in the preferred embodiment. This permits of utilization of the space below the ash pit as a utility cabinet |10. In this modification longitudinal apertures |12 are found in the sides of the base, permitting the air to flow in through the side, up through the holes in the bottom of the stove, through the air passages and expelled from the holes at the top of the stove.

In the embodiment shown in Fig. 14 a stove body like that disclosed in Fig. 13 has been disclosed; but instead of being mounted upon a continuousv base, this stove body has been mounted upon four short legs, probably three to four inches in height. This also permits ofthe use of a utility cabinet l 10 under the ash pit. When a utility cabinet is provided, it is preferably accessible from the front through the door |14, symmetrically disposed with respect to the ash pit door and the same size, so as to harmonize in appearance.

The rear end piece 66 of the stove is provided with horizontal ribs 206 and vertical ribs 202 for reenforcing the rear of the stove and giving it rigidity. The rear end piece 66 is provided with a pair of knock-out plugs 264 and 266 to facilitate the insertion of hot water coils into the firebox. 4

Although the preferred modication of the device has been described, it will be understood that within the purview of this invention various changes may be made in the form, details, proportion and arrangement of parts, which generally stated consist in a device capable of carrying out the objects set forth, in the novel parts, combination of parts and mode of operation, as disclosed and defined in the appended claims.

Having thus described my invention, I claim:

l. In a stove assembly having a cast iron front, a metallic top and a cast iron back, the cast iron front portion being provided with rearwardly projecting lugs, theY top portion being provided with downwardly projecting lugs, a pair vof enameled side panelsextending over the sides of the stove, each of said panels being provided with inwardly directed flanges along the sides thereof, the flanges along the front edge and the top being provided with slots for receiving the lugs, the rear edge flange and the bottom ange being provided with apertures and screws for securing the rear edge flange and the bottom flange to the rear casting and the bottom of the stove to hold the side panel in position, the lugs along the front side and extending down from the top cooperating therewith to .rigidlyn support the panel.

2. In a'stove assembly having a frame structure extending along the top, along the front, along the back and along the bottom of the stove, and a pair of panelsone for each side, the frame of the stove having inwardly projecting lugs on two sides thereof, each' of said panels having inwardly projecting'flanges on all sides thereof, the flanges along two sides having apertures registering with the lugs and positioned on the lugs when the panel is in home position, the flanges on the other two sides of the panel overlying the outside of the frame on the corresponding sides of the stove and secured thereto by suitable bolts.

3. In a stove assembly having a cast frame extending along the top of the stove, along the front of the stove, along the bottom of the stove and along the. back of the stove, and a pair of panels one for each side for covering the sides of the stove, the frame along the top and along one end being provided with inwardly projecting lugs, each of the panels having inwardly projecting flanges on the sides thereof, the flange along the top having apertures registering with the lugs extending downwardly from the top of the stove, the anges along either end of the panel being provided with apertures registering with the lugs, the apertures in one flange registering with the lugs on one-side of the stove, the apertures in the flange in the other end being adapted toyre'g'ister with the lugs on the other side of the stove, and means cooperating with the flanges on the panels on the sides opposite the lugs for holding the panel in position.

4. In a stove assembly having a top frame member, end frame members and a bottom frame member interconnected to support a' iirebox, a pair of panels for facing the sides Vof the stove, said panels having inwardly directed anges along two adjacent edges thereof, two adjacent edges of the frame having lugs inwardly disposed, said lugs registering with the apertures in the flanges when the panels are in home position, and means for removably securing the other edges of Vthe panels in position.

5. A dual purpose stove assembly for use as a cook stove and a heating stove having a fire-box including side walls inset from the outer edges of the stove along the the sides thereof, the combination including a frame extending along the top along the two ends and along the bottom, of the stove and having a width substantially equal to the maximum width of the stove, removably mounted panels forv covering the sides of the stove, each of said panels Ibeing provided with a pair of inwardly directed flanges one along the front edge of each panel and the other along the rear edge of each panel, the anges along the front edge and along the rear edge being identical so that the panels are interchangeable for use either on the right hand side or the left hand side of the stove, said panels being offset with respect to the sides of the fire-box so as to leave an air circulating -space between the fireboX and the panels, and means for securing the panels in position.

BENJAMIN F. BERKHEIMER. 

